#1617 Not all files are extracted from installer archive

[anatoly techtonik]

This installer archive is 585Mb, but 7z finds only 13Mb of files inside of it:
https://download.qt.io/archive/qt/5.5/5.5.0/qt-opensource-windows-x86-msvc2010-5.5.0.exe
Is it possible to do something about it?

[Igor Pavlov]

It uses some format that is not supported by 7-zip.
You can open that file archive so:
1) 7-Zip / Open Archive ... / *
2) extract [0] file
3) open [0] file in Parser mode: 7-Zip / Open Archive ... / #

[anatoly techtonik]

Is it possible to do this from comamnd line tool on Linux? Or from Far Manager? Far doesn't show [0] file in directory listing.

[Igor Pavlov]

7z x a.exe -t*
7z x [0] -t#

[Vladimir Surguchev]

Far shows [0] and allows to extract it (arclite -> Open (format Menu) -> PE ...).
But it hasn't Parser mode to extract nested archives.

[VictorVG]

It qt.digia.com installer for which there is no decompressor. So what? Are not they the first is not the past that they have fun. It is sometimes worth a little, well, just think a little - just not to sit down with a flourish in a puddle. I often meet such files - allied to the work of love to cover their regular failures like "methods of protection of intellectual property." Why, a pain in the bag will out. :) And then people have their reasons, but that is no reason for a mindless scribbling. Commercials in the world is no paper is not enough. :)

[anatoly techtonik]

Ok, I thought it is not a custom installer, but a standardone. But if all Qt installers, like QGIS one are made using that tool, it may worth to add it.

[anatoly techtonik]

When I open [0] file 7z shows only 13 Mb of files out of 569 Mb.

[Igor Pavlov]

Yes, you need to open it in parser mode. Read my messages above.

[anatoly techtonik]

Now I see. There are exactly 99 files, half of them are .7z and the other half looks like index and checksum data.

Interesting that Qt uses 7zip itself. qres signature at the start of [0] suggests that this is just a wrapper format, but I have found a description for it yet.

[anatoly techtonik]

Found it - https://github.com/qtproject/installer-framework/blob/2af57eb8c8351e09f3224128b3593aa160c6c424/tools/binarycreator/rcc/rcc.cpp#L796

[anatoly techtonik]

It rcc format - or Qt binary resource file - and here is the description http://doc.qt.io/qt-5/resources.html Is it possible to add support for it?

[Igor Pavlov]

If it's used only by "qt", maybe it's not so popular.
I include the code for new format to 7-zip, if I think that format is popular.

You can write external plugin for 7-zip (dll), if you need that format.

[anatoly techtonik]

Qt is a framework, so my guess is that this format is used by all Qt applications that need to bundle resources into one file.

[Robert Pancoast]

Greetings,

Is there any way to hardcode this exception for QT specific archives as added functionality into the invaluable 7z binary? Currently I just encountered this issue while building some QT NuGets on continuous integration servers, and I would imagine others will also experience the confusion.

Thanks,
coast

[Tres Finocchiaro]

I would imagine others will also experience the confusion.

Yes, hitting this wall now. Working on a C-I style script as well and this bundle appears to be unextractible. Would love to have the feature!

[Tres Finocchiaro]

Update: I'm working from qt-opensource-windows-x86-msvc2015_64-5.8.0.exe and following Igor's troubelshooting steps right now and the files are in proper 7z format, but only the first file is extracted by default. Here are the files:

#### FIRST ####
7z x qt-opensource-windows-x86-msvc2015_64-5.8.0.exe -t*
# > [0]
# > .data
# > .qtmetad
# ...etc...

#### THEN ####
7z x [0] -t#
# > 1.7z
# > 2.7z
# > 3.7z
# ...
# > 152.7z

By default, only 2.7z is extracted and displayed within the 7zip GUI.

I've examined the nested 3.7z-152.7z files, they do contain everything ELSE I'm looking for.

[Tres Finocchiaro]

Ok... I'm able to get everything... Here's how I did it:

# Extract the [0] file from exe
7z x qt-installer.exe -t* -i![0] -y

# Extract only embedded 7z files from [0]
7z x [0] -t# -i!*.7z -y

# Extract content from all 7z files
7z x 2.7z -ai!*.7z -y

And of course, delete the files left behind ([0], *.7z)